Photonics

Photonics

Topics related to Lumerical and more

Difference between the overlap and coupling

    • chaow
      Subscriber

      I got a little confused about the calculation of power coupling between two modes.

      Given the overlap equation: 

       overlap =∣ ∣Re[(E1×H2dS)(E2×H1dS)E1×H1dS]1Re(E2×H2dS)∣ ∣∣,

      how the power coupling is further calculated from the equation above?

      Thanks!

      Best

       

       

    • Amrita Pati
      Ansys Employee

      Hi Chaow,

      The difference between overlap and power coupling is explained in the following video:
      https://www.youtube.com/watch?v=BkYsGApvGB0

      Please let me know if you have any further questions.

      Regards,
      Amrita

       

    • chaow
      Subscriber

      Hi dear Amrita,

      thank you so much for your quick reply. Your link is really helpful and has resolved my confusion!

      Best,

      Chao

    • Amrita Pati
      Ansys Employee

      Hi Chao,

      Glad I could help!

      Regards,
      Amrita

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